13125413135545 has 8 divisors (see below), whose sum is σ = 15750588066696. Its totient is φ = 10500268972416.

The previous prime is 13125413135533. The next prime is 13125413135563. The reversal of 13125413135545 is 54553131452131.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 2040795102096 + 11084618033449 = 1428564^2 + 3329357^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13125413135545 - 2²⁵ = 13125379581113 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6742852 + ... + 8468581.

It is an arithmetic number, because the mean of its divisors is an integer number (1968823508337).

Almost surely, 2^{13125413135545} is an apocalyptic number.

It is an amenable number.

13125413135545 is a deficient number, since it is larger than the sum of its proper divisors (2625174931151).

13125413135545 is a wasteful number, since it uses less digits than its factorization.

13125413135545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15384011.

The product of its digits is 540000, while the sum is 43.

Adding to 13125413135545 its reverse (54553131452131), we get a palindrome (67678544587676).

The spelling of 13125413135545 in words is "thirteen trillion, one hundred twenty-five billion, four hundred thirteen million, one hundred thirty-five thousand, five hundred forty-five".